Could you correct these sentences, please)

1. Tom’s cough can be CATCHING (You can use the word contagious. Tom's cough is contagious.) . - Yes, I have known it, because I sneeze and have a cough already.
2. My nose is TICKLY (or ticklish), I feel that I am going to sneeze.
3. There is the corrupt department. Everybody takes the BRIBES there.
4. You are so polite, you show the CIVILITY every time. - I think, it is just CONVENTIONAL DECORUM.
5. It was DEAD-END situation for Ann. She gets MINIMUM-WAGE (minimum wage) income and she has to be BREADWINNER. Therefore it was a reason why she took the BRIBES.
6. You gave a REASONABLE answer. You don’t have to explain and (or) prove anything.
7. I have bought this cheese with good SAVOUR (flavour or aroma) NEARBY. There is no such kind of cheese anymore, so I went to the store, timely buying.
8. These EXISTING rules and laws don’t help us to (in) avoiding corruption, unfortunately not everybody is LAW-ABIDING.
9. Ann adores RURAL life, because there are fresh air, ECO-FRIENDLY (or organic?) food and LOW-COST rent (accommodation).
10. That ORNAMENTAL plant was so PERSEVERING (resilient). It (was) EXPOSED to the dangers such as long downpour and (a) brutal, baking sun. Regardless those terrible conditions the plant has survived.

Good job and keep on practicing. Good luck! ^_^